JP4289150B2 - Opening trim weather strip manufacturing method and opening trim weather strip mold apparatus - Google Patents

Description

The present invention relates to a manufacturing method and the opening trim weather strip mold system of the opening trim weather strip that is attached to the periphery of the door opening of the vehicles or the like.

Conventionally, a weather strip having a trim portion having a substantially U-shaped cross section and a hollow seal portion that bulges outward from a side wall portion or a bottom wall portion of the trim portion is known. Yes. In such an opening trim weather strip, generally, the end portions of one or a plurality of extrusion-molded portions formed in an elongated shape by extrusion molding are joined together to form a substantially annular shape. That is, with the end portions of the extrusion-molded portions supported and fixed in the mold apparatus, the end portions are connected to each other by forming the mold portions by injection molding between the end portions. The strip is formed.

In time and, in the weather strip of the type comprising a molded part as mentioned above, when molding the molded part, the core for forming the hollow seal portion into the cavity of the mold device It is necessary to arrange a mold member (hereinafter abbreviated as a core mold). The core mold includes a core main body for forming a seal portion and a gripping portion that protrudes outward from the core main body. Most of the core body is wrapped with an elastic material such as rubber. However, after the molding part is molded, the core body needs to be extracted from the molded product. In this case, it is common that an opening (slit) is provided in the mold forming portion for extracting the core body during molding.

In general, from the viewpoint of easy removal of the core body, it is desirable to make the slit as large as possible. However, the longer the slit, the more disadvantageous it is that the shape retention performance and the sealing performance of the seal portion are reduced. As a technique for solving such a problem, it is known to divide a core mold member into a plurality of parts in the longitudinal direction (see, for example, Patent Document 1). According to this technique, first, one split core mold member (hereinafter abbreviated as a split core mold) is extracted, so that the remaining split core mold and the molded product can be relatively moved. Therefore, the core body can be removed from the seal portion of the molded portion relatively easily without lengthening the slit so much.
Japanese Utility Model Publication No. 3-39514

  However, in the above technique, the split core mold is unlikely to receive a physical external force, unlike other mold members, and is easily damaged by repeated molding. Therefore, frequent maintenance work is required, which may increase the cost. Further, depending on the configuration of the mold apparatus, there are cases where it is still difficult to extract even if divided.

The present invention has been made in view of the above circumstances, and an object thereof is to suppress a decrease in shape retention performance and sealing performance, and to dramatically improve workability in manufacturing and to suppress an increase in cost. An opening trim weather strip manufacturing method and an opening trim weather strip mold apparatus are provided.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. An extruded portion formed by extrusion having a trim portion having a substantially U-shaped cross section and a hollow seal portion integrally formed on a side wall portion of the trim portion;
Having a trim portion and a sealing portion by Uni by linearly connecting the ends of the extruded portion, the opening formed by and a molded part molded by the mold apparatus comprising a plurality of mold members In the method of manufacturing a trim weather strip,
Upon molding of the molded part, the core mold member comprising a grip portion and out longitudinally extending along the core body and the core body do et collision of the seal portion so as to mold the sealing portion of at least the molding unit among them, in a state where both ends were fitted allowed the seal portion of the extruded portion at both ends of the core body, to set the core mold member at a predetermined position of the mold device, closing the mold member Te, to form a cavity in the mold device, by molding by filling the material into the cavity, to form a molded part, wherein the grip portion and the grip portion in the molding portion An opening longer than the grip portion is formed in the side wall portion of the trim portion on the side where the seal portion is formed by a slide mold member that is slidable along a protruding direction from the core body. And
During the molding, the slide mold member is installed so as to abut the surface of the core body in a direction perpendicular to the direction in which the slide mold member slides, and the cavity is filled with a material. By sliding the slide mold member later, a clearance is formed in the opening,
After molding, within the clearance of the opening, the gripping part is relatively moved along the longitudinal direction thereof, the outer fitting of the extrusion molding part at the end of the core body is removed , and the core body is removed from the sealing part of the mold molding part. A method for manufacturing an opening trim weather strip, characterized in that the strip is removed.

According to the means 1, a core mold member comprising at least a core main body for forming the seal portion of the mold forming portion and a gripping portion protruding from the core main body is used for forming the mold forming portion. And a predetermined position of a mold apparatus composed of a plurality of mold members. In this state, a material is filled in the cavity of the mold apparatus and is molded, thereby forming a molded part having a portion to be an opening. In the means 1, an opening longer than the width of the gripping part is formed not only from the gripping part but also from the gripping part and a slide mold member provided so as to be slidable . That is, by separating the slide mold member from the molded mold forming part, a clearance is formed in the opening adjacent to the gripping part, and the gripping part relatively moves within the clearance of the opening. It becomes possible. And the edge of a core main body can be moved to an opening or the site | part close | similar to an opening by moving a holding | grip part and a shaping | molding part relatively. For this reason, the core body can be taken out very easily from within the seal portion of the mold forming portion, and the workability during manufacturing can be dramatically improved. Further, as described above, since the core mold member (the core body in the seal portion and the grip portion in the opening) and the mold forming portion can be moved relative to each other at the time of taking out, the opening need not be provided so long. Also good. As a result, it is possible to prevent a situation in which the shape retention performance and the sealing performance of the molded part of the opening trim weather strip finally obtained are deteriorated. Moreover, since it is not necessary to divide | segment and comprise a core metal mold member (especially core main body), the maintenance operation | work by receiving damage is not required so much, and the increase in cost can be prevented.
In addition, the slide mold member slidably provided with respect to the fixed mold member or the like is slid to form a part of the opening between the core mold member. Therefore, the above-described functions and effects can be achieved without complicating the structure and without requiring a complicated work process.
Moreover, an opening is formed in the side wall part or the bottom wall part on the side where the seal part is formed in the trim part of the molded part. Therefore, with respect to the obtained weather strip, the influence on the sealing performance due to the presence of the opening can be minimized.

Means 2 . Means characterized in that, in the opening, the length in the longitudinal direction of the clearance in which the gripping portion can be relatively moved is equal to or longer than the external fitting length of the extruded portion to the end portion of the core body. The manufacturing method of the opening trim weather strip of 1 .

According to the means 2 , the length in the longitudinal direction of the clearance in which the gripping part can be moved relative to each other is set to be equal to or longer than the external fitting length of the extruded part to the core body. Therefore, a sufficient amount of the relative movement can be ensured. In other words, the maximum relative movement is performed, so that one end side of the core body can be more reliably exposed from the opening. As a result, the take-out operation can be further facilitated.

Means 3 . A linear connection is made between both ends of the extruded part formed by extrusion having a trim part having a substantially U-shaped cross section and a hollow seal part integrally formed on the side wall part of the trim part. a opening trim weather strip for a mold device for molding a molded part having a trim portion and a sealing portion,
A fixed mold member having a predetermined molding surface;
A movable mold member provided so as to be capable of contacting and separating from the fixed mold member and having a predetermined molding surface;
One or a plurality of slide mold members provided between the fixed mold member and the movable mold member, having a predetermined molding surface and slidable;
And a core mold member comprising a grip portion and out longitudinally extending along the core body and the core body do et collision of the seal portion so as to mold the sealing portion of at least the molding unit,
The core body has an insertion part into which the extrusion molding part is fitted, and at least a molding part for molding the seal part,
The grip portion is provided at the molding site and is configured to be shorter than the length of the molding site,
At least one of the slide mold members is provided so as to be slidable along a protruding direction of the grip portion from the core body, and the slide mold member includes the grip portion of the molding portion. Protruding to correspond to the part that is not provided , provided with a convex portion that can come into surface contact with the molding part in a direction perpendicular to the direction in which the slide mold member slides relative to the core body ,
For the opening trim weather strip, an opening longer than the grip portion is formed in the side wall portion of the trim portion on the side where the seal portion is formed by the grip portion and the convex portion . Mold equipment.

According to the means 3 , the grip portion extending from the molding portion of the core body is configured to be shorter than the length of the molding portion, but at least one of the slide mold members includes the grip portion of the molding portion. The convex part projected corresponding to the site | part in which the part is not provided can surface-contact the site | part for shaping | molding. For this reason, after shaping | molding, opening longer than the said holding part by the convex part and the holding part will be formed in the side wall part or bottom wall part by the side of the said seal part in the said trim part . Then, by sliding the slide mold member, a clearance corresponding to the convex portion is formed in the opening portion. Therefore, the grip portion can be relatively moved within the clearance of the opening. And the part for insertion of the core body can be moved to the opening or a part close to the opening by relatively moving both (the mold part and the core mold member). Therefore, it becomes possible to take out the core main body very easily from the seal part of the mold forming part, and it is possible to dramatically improve the workability in manufacturing. Further, as described above, since the core mold member and the molded part can be moved relative to each other at the time of removal, the opening need not be so long. As a result, it is possible to prevent a situation in which the shape retention performance and the sealing performance of the molded part of the opening trim weather strip finally obtained are deteriorated. Moreover, since it is not necessary to divide | segment and comprise a core metal mold member, the maintenance operation | work by receiving damage is not required so much, and the increase in cost can be prevented.

Means 4 . 4. The opening trim weather strip mold apparatus according to claim 3 , wherein a length of the convex portion along the longitudinal direction of the seal portion is equal to or longer than a length of the insertion portion.

According to the means 4 , since the length of the convex portion along the longitudinal direction of the seal portion is equal to or longer than the length of the insertion portion, a sufficient clearance can be secured and the relative movement amount can be secured sufficiently. . In other words, the maximum relative movement is performed, so that the insertion portion of the core body can be more reliably exposed from the opening. As a result, the take-out operation can be further facilitated.

  Hereinafter, an embodiment in which a weather strip is embodied as an opening trim weather strip attached to the periphery of a door opening of a vehicle will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, a weather strip 4 is provided on the periphery of the door opening 3 on the body side corresponding to the door 2 on the side of the automobile 1. The weather strip 4 of the present embodiment is attached over the entire periphery of the door opening 3, and most of the weather strip 4 is formed by an extrusion molding method, and only the lower central portion (the portion with the dotted pattern in FIG. 2) is the mold. It is a molding part. That is, the weather strip 4 is formed in an annular shape by one extrusion molding portion 5 and one mold molding portion 6 in which both end portions 5a and 5b are joined.

  FIG. 3 is a cross-sectional view showing the extruded portion 5 occupying most of the weather strip 4. The extrusion molding part 5 has a trim part 11 as an attachment base part and a hollow seal part 12. The trim part 11 is comprised by the connection part 15 which connects the vehicle inner side wall part 13, the vehicle outer side wall part 14, and both side wall parts 13 and 14, and has comprised the cross-sectional substantially U shape. The trim portion 11 is made of, for example, EPDM (ethylene-propylene-diene three-dimensional copolymer) solid rubber, and a metal insert 16 is embedded therein. Further, a cover lip 17 extending toward the vehicle inner side is integrally formed with the connecting portion 15 of the trim portion 11. In addition, a holding lip 18 protrudes from the inner side surface of the vehicle inner side wall portion 13, and a plurality of holding ridges 19 protrude from the inner side surface of the vehicle outer side wall portion 14. The hollow seal portion 12 is formed integrally with the vehicle outer side wall portion 14 and is made of, for example, EPDM sponge rubber.

  On the other hand, as shown in FIG. 4, the mold forming portion 6 basically has a cross-sectional configuration similar to that of the extrusion forming portion 5. That is, the molded part 6 also includes a trim part 21 and a seal part 22. However, in the molded part 6, the trim part 21 is made of the same EPDM sponge rubber as that of the seal part 22, most of the outer side wall part of the vehicle, the cover lip, the holding lip and the holding ridge are omitted. It is different from the extrusion molding part 5 by the point etc. by which the insert is not provided. And since most of the vehicle outer side wall is omitted, an opening 23 for extracting a core mold member, which will be described later, is formed. Hereinafter, the term “member” will be omitted for the mold members such as the core mold member and the fixed mold member.

  As shown in FIG. 3, the weather strip 4 configured as described above is attached by fitting the trim portions 11 and 21 to the flange 3 a of the door opening 3. When the door 2 is closed in the mounted state, the seal portions 12 and 22 are elastically brought into contact with the outer peripheral portion of the door panel and deformed. As a result, the seal portions 12 and 22 are brought into close contact with the outer peripheral edge of the door panel so that the interior and exterior of the automobile are sealed.

  Next, a mold apparatus 30 for forming the mold forming part 6 in the weather strip 4 will be described. 5 is a schematic plan view showing a state in which an upper die 32 to be described later is omitted in the die device 30, FIG. 6 is a perspective view showing the core die 35, and FIG. FIG. 8 is a sectional view taken along line -K, FIG. 8 is a sectional view taken along line LL in FIG. 5, and FIG. 9 is a sectional view taken along line MM in FIG.

  As shown in these drawings, the mold apparatus 30 includes a lower mold 31 that is a fixed mold, an upper mold 32 that is a movable mold, a first slide mold 33, a second slide mold 34, and a core mold 35. And. In the present embodiment, the upper mold 32 is provided so as to be movable toward and away from the lower mold 31. The first slide mold 33 and the second slide mold 34 are slidable between the upper mold 31 and the lower mold 32 (slidable in the left-right direction in FIGS. 7 to 9).

  The core mold 35 is mainly for forming the seal part 22 of the mold forming part 6 and the inner peripheral wall of the trim part 21, and the core body 36 and the second slide mold from the core body 36. And a core holding portion 37 as a gripping portion extending in the direction of 34 (downward in FIG. 5, left in FIG. 8). The core body 36 is formed with a molding part 36a located at the center in the longitudinal direction, and protruding parts 36b, 36c into which both end parts 5a, 5b of the extruded part 5 are inserted. It consists of.

  In the present embodiment, the core holding portion 37 extends from a part of one side of the core portion 36, which is not the entire region in the longitudinal direction, rather than the entire region in the longitudinal direction. In other words, the width W1 of the core holding portion 37 in the present embodiment is, for example, about one third of the width W of almost the entire longitudinal direction of the molding portion 36a, and the remaining 3 As much as two minutes (W−W1 = W2), the core hold unit 37 does not exist (see FIG. 10A). In the present embodiment, in the portion of the core body 36 where the core holding portion 37 does not exist, the portion for forming the trim portion 21 of the mold forming portion 6 does not exist, and the notch portion 38 is formed. (See FIG. 6). Instead, a convex portion 39 corresponding to the cutout portion 38 is integrally formed on the second slide core 34. When the molds 31 to 35 are installed, the convex portion 39 enters the notch portion 38 (below the molding portion 36a), and the upper surface of the convex portion 39 and the molding portion 36a. The bottom surface is in contact with the surface (so-called “zero contact”). Furthermore, in the present embodiment, the width (W2) of the notch 38 (projection 39) where the core hold part 37 does not exist is set longer than the lengths of the insertion parts 36b and 36c.

  Next, the method for manufacturing the weather strip 4 described above will be described with a focus on the molding process of the mold molding unit 6 using the mold apparatus 30.

  First, an extrusion molding unit 5 that has been previously extruded and cut to a predetermined length is prepared. The elongated extruded portion 5 is curved so as to substantially correspond to the shape of the door opening 3, and the end portions 5 a and 5 b of the extruded portion 5 are respectively inserted into the insertion portions 36 b and 36 b of the core body 36. It is inserted into 36c (it fits outside). Next, the lower mold 31, the first slide mold 33, the second slide mold 34, and the core mold 35 on which the extrusion molding unit 5 is set are set at predetermined positions (see FIG. 5), the upper mold 31 is set, Clamp the mold. Then, a cavity (molding space) 41 for the mold part 6 is formed (see FIGS. 7 and 8). At this time, in FIG. 9, the end portion 5 b of the extrusion-molded portion 5 is set, but in the drawing, the description of the end portion 5 b is omitted for convenience.

  Then, EPDM sponge rubber is supplied into the cavity, and the molding part 6 is molded. When the molded part 6 is vulcanized and the shape is stabilized, the weather strip 4 is removed from the mold apparatus 30. At this time, the extrusion molding part 5 and the molding part 6 are already connected.

  When removing, the upper mold 32 is first opened, then the first slide mold 33 is slid (slid upward in FIG. 5), and the second slide mold 34 is slid (slid downward in FIG. 5). Then, as shown in FIG. 10A, as the second slide mold 34 slides, the convex portion 39 is separated from the cutout portion 38, and a space corresponding to the cutout portion 38 is formed. In addition, the space is formed, and the opening 23 is formed in the mold portion 6 by the length of the molding portion 36a. Therefore, a clearance (gap) in which the core hold part 37 can be relatively moved is formed in the opening 23. In other words, the core holding part 37 and the mold forming part 6 are in a state in which they can be relatively moved by the width W2.

  Then, the mold forming unit 6 and the core mold 35 are moved relative to each other. That is, here, a description will be given of the case where the mold forming portion 6 is displaced without disengaging the core mold 35. From the above state, the mold forming portion 6 is moved in the direction in which the gap is eliminated (rightward in FIG. 10). Pull only about the same length as the width W2. Then, as shown in FIG.10 (b), the terminal of one insertion part 36c of the core metal mold | die 36 will be located inside the said opening 23 terminal (right side terminal of a figure), and it is for insertion The part 36c is exposed. In this state, by removing the mold part 6 from the insertion portion 36c, as shown in FIG. 11, one insertion member 36c of the core body 36 can be removed very easily. Thereafter, the mold forming part 6 is pulled in the direction opposite to the above. Then, the terminal of the other insertion part 36b of the core mold 36 is located inside the opening 23 terminal (the left terminal in the figure), and the insertion part 36b is exposed. In this state, the core molding 36 is removed from the molding part 6 very easily by peeling the molding part 6 from the insertion part 36b, and the weather strip 4 having the above-described configuration is obtained.

  As described in detail above, the opening 23 is formed when the mold forming portion 6 is formed. In the present embodiment, not only the core hold portion 37 but also the core hold portion 37 and the second slide die 34 are formed. Accordingly, an opening 23 longer than the core hold part 37 is formed. That is, by sliding the second slide die 34 from the molded die forming portion 6, a space corresponding to the convex portion 39 (notch portion 38) is formed, and a clearance is formed in the longitudinal direction. Therefore, the opening 23 (molding part 6) can be moved relative to the core holding part 37. Then, the end of the insertion portion 36c of the core body 36 is exposed by the relative movement, and the core body 36 can be taken out from the mold part 6 very easily through the above-described procedure. As a result, it is possible to dramatically improve workability during manufacturing.

  Further, as described above, since the core mold 35 and the molded part 6 can be moved relative to each other when taking out, the opening 23 does not have to be provided so long. As a result, it is possible to prevent a situation in which the shape retention performance and sealing performance of the molded part of the weather strip finally obtained are deteriorated. Moreover, since it is not necessary to divide | segment and comprise a core metal mold | die, the maintenance operation | work by receiving damage is not required so much, and the increase in cost can be prevented.

  Furthermore, in this embodiment, the clearance (W2) formed by the slide of the second slide die 34 is set to be equal to or longer than the external fitting length of the insertion portions 36b and 36c of the core body 35 of the extrusion molding portion 5. Therefore, a sufficient amount of the relative movement can be ensured. In other words, the insertion portions 36 b and 36 c of the core body 35 can be more reliably exposed from the opening 23 by performing the maximum relative movement. As a result, the take-out operation can be further facilitated.

  In addition, in this embodiment, the opening 23 is formed in the side wall portion of the trim portion 21 of the mold forming portion 6 on the side where the seal portion 22 is formed. Therefore, with respect to the weather strip 4 to be obtained, the influence on the sealing performance due to the presence of the opening 23 can be minimized.

  In addition, it can also comprise as follows, for example, without being bound to the said embodiment.

(A) In the above embodiment, the opening 23 is formed in the side wall portion of the trim portion 21 of the mold forming portion 6. On the other hand, it may be formed in a part of the seal portion (however, reference example) . For example, FIGS. 12 and 13 are cross-sectional views of the mold apparatus 50 corresponding to FIGS. The mold apparatus 50 includes a lower mold 51, an upper mold 52, a first slide mold 53, a second slide mold 54, a third slide mold 55, a fourth slide mold 56, a fifth slide mold 57, and a core mold. 58. The core mold 58 includes a core body 61 and a core hold part 62 as a grip part. Further, the fifth slide mold 57 is integrally formed with a convex portion 63 that abuts the core main body 61 on the surface at the tip, although the projection amount is not as large as the convex portion 39. In this way, by using a relatively large number of slide dies 53 to 57, it is possible to secure a trim portion having a substantially U-shaped cross section with respect to the obtained molded portion. In other words, the opening is formed in a part of the seal portion. Therefore, with respect to the obtained weather strip, the influence on the shape retention performance and the mounting performance due to the presence of the opening can be minimized.

  (B) In the above embodiment, the core holding portion 37 is provided so as to be biased toward the one insertion portion 36 c of the core body 36. On the other hand, as shown in FIG. 14, a core mold 73 in which a core holding portion 71 is provided at a substantially center in the longitudinal direction of the core body 72 may be employed. And it is good also as making the convex parts 75 and 76 of the slide type | mold 74 protrude along the both sides of the core hold part 71. FIG. By adopting such a configuration, it is possible to easily take out the molded article even if it is moved relative to either the left or right side after molding.

( C ) In the said embodiment, it is materialized to the weather strip 4 of the type which has the trim part 11 of a cross-sectional substantially U shape. On the other hand, it is also possible to embody a weather strip having a trim portion having a substantially L-shaped cross section consisting only of a side wall portion and a bottom wall portion. In this case, the side wall portion of the trim portion can be attached to the flange, for example, by using a double-sided tape, for example.

( D ) In the said embodiment, it is embodied in the opening trim weather strip 4 with which the door opening 3 periphery is mounted | worn. On the other hand, it may be embodied in an opening trim weather strip that is attached to the peripheral edge of an opening for back door, trunk lid, sliding door, sliding roof, or the like.

( E ) Of course, it may be embodied when a weather strip is manufactured by connecting a plurality of extrusion-molded parts by a plurality of mold-forming parts.

( F ) In the above embodiment, EPDM sponge rubber is used as the material of the molded part 6, but EPDM solid rubber, TPO (thermoplastic polyolefin elastomer) or the like may be used.

It is a perspective view which shows the motor vehicle etc. in one Embodiment. It is a front view which shows typically schematic structure of a weather strip. It is the JJ sectional view taken on the line of FIG. 2 which shows the general cross section of the extrusion molding part in an attachment state. It is a partially broken partial perspective view which shows a weather strip. FIG. 3 is a plan view schematically showing a state in which a state in which an extrusion molding portion is mounted is broken, in which the upper die is omitted. It is a perspective view which shows a core metal mold | die. It is the KK sectional view taken on the line of FIG. 5 which shows a metal mold apparatus. It is the LL sectional view taken on the line of FIG. 5 which shows a metal mold apparatus. It is the MM sectional view taken on the line of FIG. 5 which shows a metal mold apparatus. (A) is a partial fracture | rupture plane schematic diagram which shows the state which slid the 2nd slide type | mold, (b) is a cross-sectional schematic diagram which shows the state which moved the mold forming part relatively. It is a front schematic diagram which shows the aspect which takes out a shaping | molding part. It is sectional drawing which shows the metal mold | die apparatus in another embodiment. It is sectional drawing which shows the metal mold | die apparatus in another embodiment. It is a top view which shows the core metal mold | die in another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 4 ... Weather strip, 5 ... Extrusion part, 6 ... Molding part, 11 ... Trim part, 12 seal part, 21 ... Trim part, 22 ... Seal part, 23 ... Opening, 30, 50 ... Mold apparatus, 31 51 ... Lower mold as a fixed mold, 32, 52 ... Upper mold as a movable mold, 33 ... First slide mold, 34 ... Second slide mold as a slide mold, 35, 58, 73 ... Core mold, 36, 61, 72 ... core body, 36a ... molding part, 36b, 36c ... insertion part, 37, 62, 71 ... core hold part as grip part, 39, 75, 76 ... convex part, 41 ... cavity 53 ... 1st slide type, 54 ... 2nd slide type, 55 ... 3rd slide type, 56 ... 4th slide type, 57 ... 5th slide type as a slide metal mold | die.

Claims (4)

An extruded portion formed by extrusion having a trim portion having a substantially U-shaped cross section and a hollow seal portion integrally formed on a side wall portion of the trim portion;
Having a trim portion and a sealing portion by Uni by linearly connecting the ends of the extruded portion, the opening formed by and a molded part molded by the mold apparatus comprising a plurality of mold members In the method of manufacturing a trim weather strip,
Upon molding of the molded part, the core mold member comprising a grip portion and out longitudinally extending along the core body and the core body do et collision of the seal portion so as to mold the sealing portion of at least the molding unit among them, in a state where both ends were fitted allowed the seal portion of the extruded portion at both ends of the core body, to set the core mold member at a predetermined position of the mold device, closing the mold member Te, to form a cavity in the mold device, by molding by filling the material into the cavity, to form a molded part, wherein the grip portion and the grip portion in the molding portion An opening longer than the grip portion is formed in the side wall portion of the trim portion on the side where the seal portion is formed by a slide mold member that is slidable along a protruding direction from the core body. And
During the molding, the slide mold member is installed so as to abut the surface of the core body in a direction perpendicular to the direction in which the slide mold member slides, and the cavity is filled with a material. By sliding the slide mold member later, a clearance is formed in the opening,
After molding, within the clearance of the opening, the gripping part is relatively moved along the longitudinal direction thereof, the outer fitting of the extrusion molding part at the end of the core body is removed , and the core body is removed from the sealing part of the mold molding part. A method for manufacturing an opening trim weather strip, characterized in that the strip is removed. The length in the longitudinal direction of the clearance in which the grip part can move relative to the opening is set to be equal to or longer than the external fitting length of the extruded part to the end of the core body. Item 2. A method for manufacturing an opening trim weatherstrip according to Item 1 . A linear connection is made between both ends of the extruded part formed by extrusion having a trim part having a substantially U-shaped cross section and a hollow seal part integrally formed on the side wall part of the trim part. a opening trim weather strip for a mold device for molding a molded part having a trim portion and a sealing portion,
A fixed mold member having a predetermined molding surface;
A movable mold member provided so as to be capable of contacting and separating from the fixed mold member and having a predetermined molding surface;
One or a plurality of slide mold members provided between the fixed mold member and the movable mold member, having a predetermined molding surface and slidable;
And a core mold member comprising a grip portion and out longitudinally extending along the core body and the core body do et collision of the seal portion so as to mold the sealing portion of at least the molding unit,
The core body has an insertion part into which the extrusion molding part is fitted, and at least a molding part for molding the seal part,
The grip portion is provided at the molding site and is configured to be shorter than the length of the molding site,
At least one of the slide mold members is provided so as to be slidable along a protruding direction of the grip portion from the core body, and the slide mold member includes the grip portion of the molding portion. Protruding to correspond to the part that is not provided , provided with a convex portion that can come into surface contact with the molding part in a direction perpendicular to the direction in which the slide mold member slides relative to the core body ,
For the opening trim weather strip, an opening longer than the grip portion is formed in the side wall portion of the trim portion on the side where the seal portion is formed by the grip portion and the convex portion . Mold equipment. 4. The mold apparatus for an opening trim weather strip according to claim 3 , wherein a length of the convex portion along the longitudinal direction of the seal portion is equal to or longer than a length of the insertion portion.

Images